1) When you have more than one person who you're crushin on or infatuated with. Having too much love from numerous sources causes people to be Love Drunk. Usually ends up in losing all the people involved.

2) When you constantly are seeking one persons affection at all times, hence getting "drunk" from someone's "love"

Example 1:

Person: So who's your girl?
Dani: Oh well see I used to be love drunk, but now I'm hungover. Meaning I have no girls, but that's ok because I can always get love drunk again ;]

Example 2:
Person: Dani texts her all day because she gets love drunk off everything she says.